Younis Qualtrics dashboards pull data from the data source and aren't built to display data such as today's date independent of the data. If, for example, your data source is a survey that is consistently completed, you could create a widget that shows the recorded date and then filter that widget to "TODAY," but in order for that to work, you'd need to be confident that the survey is completed every day those completions are early in the day.

Younis
Can be done but would take some workaround. since the dashboard takes data only from data source or a static text. Follow these steps.
Create a scheduled workflow with a webservice task to fire an API.
Everyday at 12 am you can create a response via this API to fill an embedded data with today's date.
Then you can just show that embedded data in a widget after mapping it as date fieldtype and filter widget with today's date.
Every day when the response comes in that widget will get updated.
Just keep in mind the timezone of when you run the workflow and when you run the scheduled workflow.
On the overall page level add a filter to not show responses which just had date embedded data field.
Hope it helps!